Continual quick service valve device

Details Continual quick service valve device Continual quick service valve device

1977-03-21

1979-03-20

Kazenske, Edward R.

Fluid-pressure and analogous brake systems

Automatic

Synchronizing

303 69, 303 82, B60T 1544

Patent

active

041450906

ABSTRACT:
This invention relates to a railway vehicle continual quick service valve device that embodies two abutments normally subject on their respective opposite sides of the pressure in a train brake pipe and in a control chamber. Upon a reduction of brake pipe pressure on one side of these abutments, one abutment operates a valve to release fluid under pressure from the brake pipe and the brake pipe side of the other abutment to atmosphere whereupon this other abutment operates a valve that releases fluid under pressure from the control chamber and the control chamber side of both abutments to atmosphere. These abutments then operate their respective valves to cut off venting of fluid under pressure from the brake pipe and the control chamber to atmosphere. If the reduction of brake pipe pressure on the one side of the one abutment continues, the above-described cycle reoccurs so long as fluid under pressure is released from the brake pipe.

REFERENCES:
patent: 473839 (1892-04-01), Hogan
patent: 1487692 (1924-03-01), Thomas
patent: 1842481 (1932-01-01), Thomas
patent: 3175871 (1965-03-01), Wilson

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